围栏封育对藏北地表热量平衡的影响（英文）
发布时间：2025-02-05 10:42
围栏封育是西藏政府用来保护生态环境的重要举措之一。这项工程不仅会改变围栏区域的植被特征,也会影响藏北地区的地表热量平衡。关于现行的围栏封育工程对当地热量平衡影响的信息却很少,我们从当地的农牧局收集了藏北各县围栏的范围坐标,将其空间数据化,并基于卫星遥感数据和地表热量平衡系统的模型计算,来探究围栏封育后地表温度、地表反照率和蒸散的变化情况。这些变化会影响藏北高原的地表热量平衡和陆表温度。研究发现日间和夜间的陆表温度变化趋势呈现出非对称日变化,日间的升温幅度大于夜间的降温幅度;反照率的增加导致藏北高原吸收的短波辐射减少,引起陆表温度降低,中部地区降温幅度最大,达到了每10年下降0.4?0.5℃;东部地区降温幅度最小,为每10年下降0.1?0.2℃;蒸散的减少导致潜热能量输送减少,引起的地表温度升高最大的地区在中部地区,升温幅度大于每10年上升1℃,升温最小的地区在西北部,升温幅度为每10年上升0?0.1℃。
【文章页数】：7 页
【文章目录】：
1 Introduction
2 Methods and datasets
2.1 Study area
2.2 Datasets
2.3 Data analysis
3 Results
3.1 Changes in the LST(Day and Night)of the fenced patches
3.2 Changes in the albedo and evapotranspiration in the fenced patches
3.3 Changes of LST caused by the absorption of shortwave radiation
3.4 Changes of LST caused by latent heat
4 Discussion
4.1 Effects of land surface characteristics on surface heat balance
4.2 Vegetation feedback to the surface heat balance
4.3 The characteristics of vegetation feedback on surface energy balance in sensitive areas
5 Conclusions
本文编号：4029710
【文章页数】：7 页
【文章目录】：
1 Introduction
2 Methods and datasets
2.1 Study area
2.2 Datasets
2.3 Data analysis
3 Results
3.1 Changes in the LST(Day and Night)of the fenced patches
3.2 Changes in the albedo and evapotranspiration in the fenced patches
3.3 Changes of LST caused by the absorption of shortwave radiation
3.4 Changes of LST caused by latent heat
4 Discussion
4.1 Effects of land surface characteristics on surface heat balance
4.2 Vegetation feedback to the surface heat balance
4.3 The characteristics of vegetation feedback on surface energy balance in sensitive areas
5 Conclusions
本文编号：4029710
本文链接：https://www.wllwen.com/projectlw/qxxlw/4029710.html
